Warrior or Paladin

Hello everyone and Merry Xmas.I've made a decision to buy Shadowmourne but I'm wondering on which class.The title speaks itself.I don't like DKs and I'm so the question is shall I buy it on warrior or on pally.The big difference is that I have paladin with Bis Prot&Holy and 6.4 Ret(with STS HC+Tiny HC, missing HC tokens on T10 and a couple of RS items) and I have a "naked" - with Furious Set and DBW HC.Since I've achieved everything on the pally(and my other alts-talking about end-game achievments) so I'm kinda bored of PvE and I'm planing to play only PvP.I think warrior , unlike paladin is very interesting in PvP.I think I'll have a lot of fun with it but the thought I'll have to go through the PvE content once again ,farming the missing PvE parts kinda dissapoints me.On the other hand I have the geared paladin.

So I want your opinions - Is it worth buying Smourne on paladin for PvP(Because Retri Palas don't looks the most enjoyable class to PvP with) or the good old warrior. Please leave me your comments with 1)PvP opinions 2)PvE opinions for both classes.

I used to have both a ret and warrior with SM and I really enjoyed my warrior in pvp.
However, I primarily play for the pve content and I really liked how versatile paladins are.